WAC 51-11C-402300. Table C402.4 — Building envelope requirements — Fenestration

Table C402.4 Building Envelope Fenestration Maximum U -factor and SHGC Requirements CLIMATE ZONE 5 AND MARINE 4 U -factor for Class AW windows rated in accordance with AAMA/CSA101/I.S.2/A440, vertical curtain walls and site-built fenestration products a Fixed b U -factor U-0.34 Operable c U -factor U-0.36 Entrance doors d U -factor U-0.60 U -factor for all other vertical fenestration Fixed U -factor U-0.26 Operable or mulled windows with fixed and operable sections U -factor U-0.28 SHGC for all vertical fenestration f Fixed Operable PF < 0.2 0.38 0.33 0.2 ≤ PF < 0.5 0.46 0.40 PF ≥ 0.5 0.61 0.53 Skylights U -factor U-0.50 SHGC 0.35 CLIMATE ZONE 5 AND MARINE 4 U -factor for Class AW windows rated in accordance with AAMA/CSA101/I.S.2/A440, vertical curtain walls and site-built fenestration products a Fixed b U -factor U-0.34 Operable c U -factor U-0.36 Entrance doors d U -factor U-0.60 U -factor for all other vertical fenestration Fixed U -factor U-0.26 Operable or mulled windows with fixed and operable sections U -factor U-0.28 SHGC for all vertical fenestration f Fixed Operable PF < 0.2 0.38 0.33 0.2 ≤ PF < 0.5 0.46 0.40 PF ≥ 0.5 0.61 0.53 Skylights U -factor U-0.50 SHGC 0.35 a U -factor and SHGC shall be rated in accordance with NFRC 100. b "Fixed" includes curtain wall, storefront, picture windows, and other fixed windows. c "Operable" includes openable fenestration products other than "entrance doors." d "Entrance door" includes glazed swinging entrance doors. Other doors which are not entrance doors, including sliding glass doors, are considered "operable." e Reserved. f Fenestration that is entirely within the conditioned space or is between conditioned and other enclosed space is exempt from solar heat gain coefficient requirements and not included in the SHGC calculation. a U -factor and SHGC shall be rated in accordance with NFRC 100. b "Fixed" includes curtain wall, storefront, picture windows, and other fixed windows. c "Operable" includes openable fenestration products other than "entrance doors." d "Entrance door" includes glazed swinging entrance doors. Other doors which are not entrance doors, including sliding glass doors, are considered "operable." e Reserved. f Fenestration that is entirely within the conditioned space or is between conditioned and other enclosed space is exempt from solar heat gain coefficient requirements and not included in the SHGC calculation.